tofsee | edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20

General

Target

edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe
Size

13.3MB
MD5

57163e49f6f67475836d3d49abab1a6f
SHA1

b11e58b16d751db535317a0aacca97c20ae7ba25
SHA256

edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20
SHA512

32f162b0b70ad5efe95974078d446d836cb7665db344a93295e7fc2f4a738f661ea79c67ac7ea30ace95d5834ef6f491f5b291f0e5072ff8c43e6545957bc256
SSDEEP

49152:f1m333333333333333333333333333333333333333333333333333333333333w:l

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
tofsee
Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2792	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\yesgszfu\ImagePath = "C:\\Windows\\SysWOW64\\yesgszfu\\wognmdov.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe

Deletes itself 1 IoCs

pid	Process
1884	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
836	wognmdov.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 836 set thread context of 1884	836	wognmdov.exe	105

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
3976	sc.exe
2728	sc.exe
3540	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3740	2068	WerFault.exe	82
1764	836	WerFault.exe	96

System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wognmdov.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2068 wrote to memory of 1592	2068	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	83
PID 2068 wrote to memory of 1592	2068	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	83
PID 2068 wrote to memory of 1592	2068	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	83
PID 2068 wrote to memory of 3296	2068	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	85
PID 2068 wrote to memory of 3296	2068	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	85
PID 2068 wrote to memory of 3296	2068	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	85
PID 2068 wrote to memory of 3976	2068	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	88
PID 2068 wrote to memory of 3976	2068	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	88
PID 2068 wrote to memory of 3976	2068	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	88
PID 2068 wrote to memory of 2728	2068	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	90
PID 2068 wrote to memory of 2728	2068	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	90
PID 2068 wrote to memory of 2728	2068	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	90
PID 2068 wrote to memory of 3540	2068	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	94
PID 2068 wrote to memory of 3540	2068	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	94
PID 2068 wrote to memory of 3540	2068	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	94
PID 2068 wrote to memory of 2792	2068	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	97
PID 2068 wrote to memory of 2792	2068	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	97
PID 2068 wrote to memory of 2792	2068	edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe	97
PID 836 wrote to memory of 1884	836	wognmdov.exe	105
PID 836 wrote to memory of 1884	836	wognmdov.exe	105
PID 836 wrote to memory of 1884	836	wognmdov.exe	105
PID 836 wrote to memory of 1884	836	wognmdov.exe	105
PID 836 wrote to memory of 1884	836	wognmdov.exe	105

C:\Users\Admin\AppData\Local\Temp\edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe
"C:\Users\Admin\AppData\Local\Temp\edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2068
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yesgszfu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1592
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wognmdov.exe" C:\Windows\SysWOW64\yesgszfu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3296
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yesgszfu binPath= "C:\Windows\SysWOW64\yesgszfu\wognmdov.exe /d\"C:\Users\Admin\AppData\Local\Temp\edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3976
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yesgszfu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2728
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yesgszfu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3540
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
  2⤵
  - Modifies Windows Firewall
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:2792
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2068 -s 660
  2⤵
  - Program crash
  PID:3740

C:\Windows\SysWOW64\yesgszfu\wognmdov.exe
C:\Windows\SysWOW64\yesgszfu\wognmdov.exe /d"C:\Users\Admin\AppData\Local\Temp\edd112e5d957e913076cb86fd6b657318987fef5e2fdd34f46c4b23cccd9ae20.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:836
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1884
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 836 -s 524
  2⤵
  - Program crash
  PID:1764

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2068 -ip 2068
1⤵
PID:3652

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 836 -ip 836
1⤵
PID:3464

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\wognmdov.exe

Filesize
10.1MB

MD5
0e2e32a06352edf523f8fe826d2db7ae

SHA1
f4ea0d552e92fa506fdcea8e21e8964122b1e557

SHA256
59a0f0965441fe757af4de927ea7c0861f51099fc98238bfa2a47befc08c0c6e

SHA512
5bf8f968826872430fe8d154fc6e6d3523d86b1aa7083e4cbb4edc4140a160cf3d4aecc9f87fba7572d586aba1976db720853b695dc32a38d59823cb25d1b417

Download Submit
memory/836-12-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/836-17-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/1884-11-0x0000000000970000-0x0000000000985000-memory.dmp

Filesize
84KB

Download
memory/1884-14-0x0000000000970000-0x0000000000985000-memory.dmp

Filesize
84KB

Download
memory/1884-16-0x0000000000970000-0x0000000000985000-memory.dmp

Filesize
84KB

Download
memory/2068-1-0x00000000018E0000-0x00000000019E0000-memory.dmp

Filesize
1024KB

Download
memory/2068-2-0x0000000001740000-0x0000000001753000-memory.dmp

Filesize
76KB

Download
memory/2068-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2068-9-0x0000000001740000-0x0000000001753000-memory.dmp

Filesize
76KB

Download
memory/2068-8-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/2068-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads